When a researcher wants to know if her results are likely caused by something other than chance, she wants to determine the results' ___________.

Answers

Answer 1
Answer:

Answer:

Reproducibility

Explanation:

The results of an experiment should be reproducible.  By repeating the experiment several times, a confidence interval can be determined that will help establish that the results are real, and not an artefact


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Which kind of waves are sound vibrations made of?transverse
circular
longitudinal
latitudinal

Answers

The answer is longitudinal. There are two types of waves: transverse and longitudinal. Transverse waves are those whose vibrations are perpendicular to the direction of the wave. Longitudinal or compression waves are those whose vibrations are in the same direction as the wave. Sound is caused by the compression of vibrations of molecules.

Answer:

longitudinal

Explanation:

Can someone help me figure out which one it is

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Answer:

X=dt

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hope it helps...

A train leaves the station at the 0.0m marker traveling with a constant velocity of 45.0 m/s. How manyseconds later will the train pass the 1500.Om marker? What is the velocity of the train in km/h?

Answers

The train will pass the 1500.0m marker 33.33 seconds after leaving the station. Its velocity is 162.0 km/h.

How to evaluate time the train will pass the 1500.0m marker and it's velocity

To find the time it takes for the train to pass the 1500.0m marker, we can use the formula: time = distance / velocity. Plugging in the values,

time = 1500.0m / 45.0 m/s

time = 33.33 seconds.

To convert the velocity from m/s to km/h, we use the conversion factor: 1 m/s = 3.6 km/h. Therefore,

velocity = 45.0 m/s * 3.6 km/h/m/s

velocity = 162.0 km/h.

In summary, the train will pass the 1500.0m marker approximately 33.33 seconds after departing the station, and its velocity will be 162.0 km/h

Read more about velocity here: here:brainly.com/question/80295

#SPJ3

Answer:

119.88 km/h

Explanation:

1500/45=33.3

use a m/s to km/h calculator

put in 33.3 for m/s and you will get 119.88 km/h.

119.88 km/h.

The energy derived from the digestion of food is __________.a. kinetic energy
b. inertia
c. momentum
d. chemical energy

Answers

By definition, we have to:

Digestion is the transformation of foods that are ingested into simpler substances to be absorbed.

Digestion has different processes:

1) Mechanical processes to reduce the size of food.

2) Chemical processes to reduce the size of the particles and prepare them for absorption.

Therefore, the energy derived from the digestion process is the chemical energy.

Answer:

The energy derived from the digestion of food is chemical energy.

Answer: Chemical energy

Explanation:  

Digestion is a chemical process where glucose burns in presence of oxygen producing energy which helps us to perform work and liberating carbon-dioxide and water. The carbon-dioxide is exhaled out.  

C₆H₁₂O₆ (Food) + O₂ →  CO₂ +H₂O+ Energy

Thus, through digestion chemical energy is obtained as old bonds are broken to form new bonds through a chemical process.

Which of the following describes gamma rays?short wavelength, high frequency
short wavelength, low frequency
long wavelength, high frequency
long wavelength, low frequency

Answers

Answer: short wavelength, high frequency

Explanation:

Gamma rays are highly energetic electromagnetic waves. High energy implies high frequency.

E = h ν

h is the Planck's constant, ν is the frequency.

For electromagnetic radiation, frequency is inversely proportional to wavelength. Thus, gamma rays have high frequency but short wavelength.

The frequency of gamma rays is greater than 10¹⁹ Hz and wavelength is less 10⁻¹² m.

Why is gravitational potential energy greater then kinetic energy?

Answers

Answer:

The gravitational acceleration energy of an item increases as it rises in altitude.

Explanation: Hope this helps :D